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#ThinSectionThursday
Zoned Allanite in the volcanic rocks from Mercaderes, Colombia#volcano #minerals #crystals #geology #rocks pic.twitter.com/fRZ0FjLDDp

— micROCKScopica (@micROCKScopica) January 30, 2020

via Twitter https://twitter.com/micROCKScopica

January 30, 2020 at 10:33PM